The clip quickly went viral, racking up more than 18 million views in just 5 days; it’s now been seen more than 26 million times.

“Tonight,” Dave Grohl told the crowd at Carisport, “we’re here for a very, very special reason. So, let me tell you – this has never happened before. This is like a revolution.”

“To see you people, singing our song for the whole f**king world, to me, it’s the greatest moment of my life,” he continued. “Of course we couldn’t say no, we had to come. You trapped us, we had to come here.”

The Foo Fighters delivered a full show and thanked the Rockin1000 participants by opening the set with “Learn To Fly” and, later, invited some of the organizers on stage – including “Mohawk Guy”, who sat in on drums for the band’s cover of the Queen classic “Under Pressure.”

The Cesena show marks the launch of the group’s European tour in support of “Sonic Highways.”